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OpenStudy (anonymous):
9i-(13+7i)
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OpenStudy (wolfe8):
You would open up the brackets as usual. However, when you obtain \[i ^{2}\]at any point, remember that it equals -1.
OpenStudy (anonymous):
Oh okay :) thank you!
OpenStudy (wolfe8):
You're welcome. Happy studying :)
OpenStudy (wolfe8):
Just remember that \[i=\sqrt{-1}\]
OpenStudy (anonymous):
Okay!
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OpenStudy (wolfe8):
I think I skipped a step. Do you know why i=-1?
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